This book focuses on the abrasion and corrosion effects of different slurries - primarily coal - on pipelines and pumping equipment. They review wear and corrosion resistant materials and detail a wide variety of tests to measure slurry effects.
Energy Citations Database
This report deals with the task of evaluating wear in the cross-flow ultrafiltration system and specifically the need to define a representative slurry in order to obtain prototypic wear rates. The filtration system will treat many different wastes, but i...
National Technical Information Service (NTIS)
This method of test is intended for measuring the wearing qualities of thin, fine aggregate bituminous surfacings, such as slurry seals, under wet abrasion conditions. It may also be used for design purposes to establish the optimum quantity and type of b...
This report deals with the task of evaluating wear in the cross-flow ultrafiltration system and specifically the need to define a representative slurry in order to obtain prototypic wear rates. The filtration system will treat many different wastes, but it is not practical to run a test for each one. This is especially true when ...
DOE Information Bridge
The effects of slurry rheological properties on the erosive wear of grinding media and grinding efficiency (percent minus 325 mesh) have been studied in a laboratory ball mill using minus 10 mesh quartzite. A laboratory procedure was also utilized to eval...
... Title : The Abrasive Wear of Borosilicate Glass. Descriptive Note : Journal article,. ... Abstract : The abrasive wear of borosilicate glass was studied. ...
DTIC Science & Technology
Pipelines are used to carry bottom ash slurries to disposal areas at many coal fired power plants. This paper presents an analysis of wear measurements taken during five years of operation of a ceramic bead lined epoxy fiberglass piping system in this service at a large mid- western power plant. Comparative wear data in bottom ash ...
This monograph gives a general classification of the various types of wear, including abrasive wear; it describes the principles and systems of laboratory tests for abrasive wear, the regularities of this form of wear under various conditions - during fri...
The aim of this study was to evaluate the wear of resin-based materials caused by the association of abrasive and corrosive processes. Twenty specimens were prepared for each material, cast in epoxy in acrylic rings, polished, and profiled with an MTS 3D Profiler. Antagonists were made from deciduous molars. Specimens were distributed into eight groups (n ...
PubMed
This book discusses the properties of coal mineral matter abrasion and particle impaction erosion wear in those power plants using coal. Its main thrust is to provide remedial measures for these problems, Since coal is such a soft, flow-strength material, its wear-causing characteristics depend largely on the presence of ...
... Title : ABRASIVE WEAR RESISTANCE OF POLYMERS USED IN ULTRASONIC FLAW INSPECTION. Corporate Author : ...
... Accession Number : AD0682112. Title : ABRASIVE WEAR RESISTANCE OF CONSTRUCTIONAL MATERIALS AND MACHINE PARTS,. ...
This article presents equations which can be used in the selection of optimal correlations of the hardness of the surface layer of steel 40Kh and the abrasive filler in the design and manufacture of components of oil-well equipment operating under conditions of hydroabrasive wear. An experiment was conducted to determine the relation of the surface ...
The contribution of corrosion to the abrasive-corrosive wear of high carbon low alloy steel (HCLA), commonly used for grinding balls, was evaluated in 15% quartz slurries. Results were compared with similar results for mild steel. The magnitude of the synergistic effect of corrosion and abrasion was determined for ...
The design of a hazardous waste immobilization facility at the Savannah River Site (SRS) set material requirements for both abrasion resistance and corrosion resistance in process equipment. Standard ASTM slurry wear test G75 was modified to permit evaluation and comparison of abrasive resistance of candidate ...
This volume introduces the growth of a new industry and the need for testing. Papers cover four major areas of concern: 1. Materials; 2. Process (Fuel) Slurries; 3. Applications; 4. Test Methods. The topics covered are: abrasive wear under wet sliding conditions; four coatings tested for abrasion and erosion ...
... Title : The Problem of the Dependence of Wear Resistance of Metals during Abrasive Wear on Their Physicomechanical Properties,. ...
... ABRASIVE WEAR OF MATERIALS IN A BLAST FURNACE UNDER ACTUAL WORKING CONDITIONS by ... 09.TI1rLE ABRASIVE WEAR OF ...
... Accession Number : ADA075790. Title : Effect of Slurry Abrasion on the Anodic Dissolution of Iron in Water,. Corporate Author ...
Abrasion-corrosion tests were conducted on two commonly Fe-Cr-C shielded metal arc welding (SMAW) hardfacings used in the sugar industry and an arc sprayed Fe-Cr-based coating. The tests were performed on a modified block-on-ring tester with the coatings sliding against compressed sugarcane fiber in the presence of abrasive slurry. The ...
NASA Astrophysics Data System (ADS)
... only abrasive but also corrosion wear has been established [1-5]. ... Since abrasive wear is taken as the main mechanism of wear, ...
The bibliography contains citations concerning the utilization of slurry pipelines for transporting metallic and nonmetallic minerals, and concentrates. Topics include system design, fluid dynamics analyses of a variety of suspensions, mathematical flow models, and equipment descriptions. Material abrasion and wear, economic aspects, ...
... abrasive are presented; and the capability of the grain geometry parameters to ... Subject Categories : SOLVENTS, CLEANERS AND ABRASIVES. ...
... Accession Number : AD0720379. Title : The Mechanism of the Variation in the Abrasive Wear Resistance of G13L Steel After Hardening,. ...
... Accession Number : AD0749769. Title : The Abrasive Wear Resistance of Vacuum-Condensed Coatings,. Corporate Author ...
... Title : STUDIES ON ABRASIVE WEAR OF MONOLITHIC SILICON NITRIDE AND A SILICON CARBIDE WHISKER-REINFORCED SILICON ...
... Accession Number : AD0724985. Title : Resistance to Abrasive Wear of Chromium Alloys with Additions of Carbide-Forming Elements,. ...
... Title : RESEARCH ON THE ABRASIVE WEAR RESISTANCE OF MANGANESE CAST IRON INOCULATED WITH CERIUM, USING THE Kh4-B ...
... Title : QUICK AND SIMPLE TEST FOR ABRASIVE WEAR RESISTANCE AND ITS PRACTICAL USE,. Corporate Author : ...
... Accession Number : ADD139343. Title : On the Abrasive Wear of AISI 4340 Steel,. Descriptive Note : Conference Paper,. ...
... IN A RUBBER-WHEEL ABRASION TEST (RWAT) AND ... IN A GRINDING WHEEL TEST (GWAT ... WEAR TESTING ON THE WHITE IRONS HAS BEEN ...
... The deformation studies included abrasive wear, elastic strain, and plas- ... Major results are as follows: 1. Abrasive Wear ...
... Title : Comparison of the Microstructures and Abrasive Wear Properties of Stellite Hardfacing Alloys Deposited by Arc Welding and Laser Cladding,. ...
... Title : ABRASIVE WEAR RESISTANCE OF STRUCTURAL STEELS DEPENDING ON THE HEAT-MECHANICAL TREATMENT (HIGH ...
... Accession Number : AD0193871. Title : ABRASION AND WEAR STUDIES BY MEANS OF RADIOACTIVE ISOTOPES. Corporate Author : ...
In this program, Advanced Ceramics Research, Inc. (ACR) proposed to develop a process to fabricate abrasive fluid (such as ore slurries) handling components with ceramic liners that exhibit improved wear and friction properties when compared to metal or c...
General theories of abrasive wear are reviewed, and wear is related to abrasive size, shape, hardness and degradation tendency. Treatment of matrix effects includes the roles of matrix microhardness, subsurface deformation and retained austenite on abrasion resistance. Discussion of second ...
The article examines the dependence of wear resistance of metals during abrasive wear on the basic physicomechanical parameters. The dependence of wear resistance and critical velocity on the same parameters during friction of metals on an abrasive surfac...
... Effect of Aging on the Abrasion Behavior of ... characteristics and data fields:, abrasions, aging data ... sizes, wear rates, wear resistances testing and test ...
... cu, whiskers, material characteristics and data fields:, abrasive wear data, fiber data testing and test conditions:, abrasion tests, sem manufacturing ...
Agglomerated titania nanopowder and a �classical� titania were sprayed by the high throughput water-stabilized plasma (WSP) and thoroughly compared. Optical microscopy with image analysis as well as mercury intrusion porosimetry were used for quantification of porosity. Results indicate that the �nano� coatings in general exhibit finer pores than coatings of the �conventional� ...
Valve modification is described for a reciprocating pump that pumps abrasive slurries. Failure of a disk valve by abrasive wear caused by an abrasive fluid flowing through the valve is retarded by the provision of a resilient O-ring along the seating surface of the disk member. A second O-ring ...
... Title : The Influence of Particle Properties on the Erosive Wear of Sintered ... that their wear resistance depends on the nature of the abrasive particles. ...
Aim of this research program is to establish the effect of mill size and batch or continuous operation on the role of corrosive and abrasive wear during mineral grinding operations. Grinding ball wear tests are being conducted on the laboratory, pilot plant and industrial scale. This report gives the results of the first ...
Reciprocating slurry pumps employed in the conversion of coal to liquid fuels handle hot abrasive coal slurries, up to 3000 psig. The object of the final phase of this program was to investigate the floating piston concept, fully described in the previously issued Topical Report, at higher rubbing speeds and oriented both vertically ...
In chemical mechanical polishing (CMP), a rigid wafer is forced on a rough, elastomeric polishing pad, while a slurry containing abrasive particles flows through the interface. The applied pressure on the wafer is carried partially by the 2-body pad-wafer contact (direct contact) and partially by the 3-body contact of pad, wafer and ...
The overall objective of this program was to demonstrate the feasibility of a new particulate lubrication concept for reducing piston ring/cylinder liner wear in coal-water slurry-fueled diesels by replacing the present oil-lubricated system with powder lubrication that would utilize coal ash, either alone or in combination with another powder. The ...
The aim of this study was to investigate the wear of four nanofilled resin composites using simulated toothbrushing for 50,000 cycles with calcium carbonate slurry. The depth of abrasion and roughness (Ra) were measured after each 10,000 brushing cycle. The surface texture of the worn samples was examined by SEM.The ...
The objective of this study was to assess the abrasive effects of toothpastes and acidic F gels on sound and demineralized enamel. Pairs of enamel specimens were cut from bovine incisors, embedded in epoxy resin and polished. An artificial subsurface lesion of 80-90 microm depth was created in one specimen from each pair. The samples were covered with adhesive tape, thereby ...
The volume theory of ball wear ascribes ball consumption in grinding mills only to impactive wear, whereas the surface theory ascribes it only to abrasive wear, and ball-wear data are often in good agreement with either or both of these theories. In this ...
The in-service operating conditions of coal transport and fragmentation equipment involve various combinations of dry or liquid slurry abrasion, impact loading, and temperatures that may vary from ambient to elevated (500 exp 0 F--1000 exp 0 F). Both 2-bo...
Wear 252 (2002) 322�331 A physically-based abrasive wear model for composite materials Gun Y. Leea 2001 Abstract A simple physically-based model for the abrasive wear of composite materials is presented-matrix composite material. � 2002 Elsevier Science B.V. All rights reserved. Keywords: ...
E-print Network
The dry reciprocating wear characteristics of two abrasion-resistant steels, C1095 and 15B37H, against an abrasive material were studied. Results showed that abrasive wear and surface fatigue were the primary wear mechanisms. The wear failure of the ...
This bibliography contains citations concerning the utilization of slurry pipelines for transporting metallic and nonmetallic minerals, and concentrates. Topics include system design, fluid dynamics analyses of a variety of suspensions, mathematical flow models, and equipment descriptions. Material abrasion and wear, economic aspects, ...
This bibliography contains citations concerning the utilization of slurry pipelines for transporting metallic and nonmetallic minerals, and concentrates. Topics include system design, fluid-dynamics analyses of a variety of suspensions, mathematical flow models, and equipment descriptions. Material abrasion and wear, economic aspects, ...
A plain carbon steel was overlayed with a wear-resistant hardfacing alloy by manual arc welding. Low stress abrasive wear tests were conducted with an ASTM rubber wheel abrasion tester using crushed silica and as the abrasive medium. The wear rate decreased with sliding ...
The British Hydromechanics Research Association (BHRA) has constructed a major hydraulic slurry test facility specifically to obtain both hydrodynamic performance and wear data for coarse particle (up to 100 mm) transport systems. System design and operating experience for large particle slurries is limited as compared with information ...
... Title : Wear of Si3N4 Ceramics by Abrasive Water Jet. ... Abstract : The wear mechanism of ceramics by abrasive water jet (AWJ) has been studied. ...
... Title : The Effect of Abrasion Resistance and Thermal Properties of the Cemented Carbide Cutting Tool Grade on the Flank Wear Characteristics. ...
... from federally funded research, testing and training ... agencies for Research Development Test and Evaluation ... mechanisms in the abrasion of Co ...
... AND FOR GOUGING ABRASION TESTING, BASED ON A ... BEEN EVALUATED AS TEST STANDARDS FOR ... LOW-STRESS TESTING HAS BEEN ...
... from federally funded research, testing and training ... for Research Development Test and Evaluation ... AND HIGH-STRESS (GOUGING) ABRASION. ...
... from federally funded research, testing and training ... for Research Development Test and Evaluation ... ON THE ABRASION WEAR RESISTANCE OF ...
... Title : An Improved Multipurpose Abrasion Tester and Its Application for the Evaluation of the Wear Resistance of Textiles. ...
... Abstract : Mild alloy and stainless steels are compared regarding wear abrasion and corrosion resistance for tools and comminution devices. ...
The effects of slurry rheological properties on the erosive wear of grinding media and grinding efficiency (percent minus 325 mesh) have been studied in a laboratory ball mill using minus 10 mesh quartzite. A laboratory procedure was also utilized to evaluate the tendency for the slurry to coat the grinding media. Media ...
Aug 6, 2011 ... The Mars Pathfinder Rover Wheel Abrasion Experiment was designed to study the abrasive wear of the martian soil on various types of metals ...
NASA Website
... ABSTRACT A standard off-the-shelf Taber Abraser instrument is used to quantify the abrasive wear resistance of high-density polyethylene jackets ...
... Accession Number : ADD138359. Title : Wear Resistance of Steels Under Wet-Abrasive Erosion Conditions,. Descriptive Note : Journal Article,. ...
Results show that increased deformation in Duralumin during age hardening and after annealing increases the wear resistance to flowing abrasive particles. (R.V.J.)
... federally funded research, testing and training ... for Research Development Test and Evaluation ... for Severe Abrasion-Wear Hardfacing Application,. ...
... Abstract : Laboratory testing procedures used to evaluate ... for their resistance to adhesive wear and dry ... The abrasion test described utilizes a gravity ...
... wear resistances parameter values relevant to the data:, volume fractions testing and test conditions:, abrasion tests, abrasive wear tests, sem, three ...
... Title : Influence of a Corrosive-Abrasive Medium on the Wear Resistance of 12Kh18N10T Steel with Surface Hardening,. ...
... a strong grain size effect on abrasive wear mechanisms in ceramics, a series of tests were conducted under severe sliding contact conditions in an ...
... Accession Number : ADD201218. Title : Corrosion-Resistant and Abrasive Wear-Resistant Composite Material for Centrifugally Cast Linings,. ...
... Accession Number : ADD126259. Title : Abrasive Wear of Cast Aluminium Alloy-Zircon Particle Composites,. Corporate Author : ...
... Accession Number : ADD150069. Title : Abrasive Wear Study of Bainitic Nodular Cast Iron. Descriptive Note : Journal article,. ...
... Accession Number : ADD150868. Title : Abrasive Wear Resistance of High-Carbon Chrome-Nickel Steel. Descriptive Note : Journal article,. ...
This work provides readers with practical advice on the selection of wear resistant materials for specific engineering purposes. Contents include: general review of wear; nature of wear; fretting; three body abrasion; gouging wear; low stress abrasion; erosion; corrosive ...
The purpose of the M.I.T. research on wear during the calendar year 1977 was to apply the delamination theory of wear in minimizing the wear rate of splines and door hinges. The technique explored was the use of thin soft metal coatings on hard substrates...
Improved lapping slurries provide for easier and more thorough cleaning of alumina workpieces, as well as inhibit corrosion of the lapping table and provide for easier cleaning of the lapping equipment. The unthickened lapping slurry comprises abrasive grains such as diamond abrasive dispersed in a carrier ...
Improved lapping slurries provide for easier and more thorough cleaning of alumina work pieces, as well as inhibit corrosion of the lapping table and provide for easier cleaning of the lapping equipment. The unthickened lapping slurry comprises abrasive grains such as diamond abrasive dispersed in a carrier ...
DOEpatents
For the clinical wear of composite filing materials to be reduced, compositional factors such as degree of cure, filler level, and silanation level should be optimized. An oral-wear-stimulating machine was used to explore the effects of these factors on abrasion and attrition wear as well as on opposing enamel ...
... from federally funded research, testing and training ... for Research Development Test and Evaluation ... Wear Debris; The Abrasion Characteristics of ...
... The wear and abrasion resistance of various plastics used for various applications (automotive brake linings, pipe linings, gun barrel surfaces ...
... Title : WEAR RESISTANCE OF HIGH-CHROMIUM STEELS IN AN AIR-ABRASIVE MEDIUM AT HIGH TEMPERATURES,. ...
... Abstract : The forms and character of wear of hydraulic turbines, axial and centrifugal pumps due to abrasion by suspended accretions and ...
... The epoxy compounds were more resistant to abrasion by sand blasting than the other compounds. The maximum wear ...
... from federally funded research, testing and training ... of simultaneous action of abrasion and chemical wear ... in a laboratory test, predict performance ...
... PRINCIPAL WEAR MECHANISMS INVOLVES REMOVAL OF PLASTICALLY DEFORMED, EXPOSED MATERIAL FROM THE LIPS OF IMPACT ...
... Wear resistance of Fiberglass Reinforced Polyester surfaces are usually considered to be somewhat less than that of melamine surfaced laminates. ...
... a flow of gas under conditions ... Descriptors : *BLAST FURNACES, CORROSION INHIBITION ... ELECTROCHEMISTRY, CORROSIVE GASES, WEAR ...
Purpose of this project was to investigate the effect of grinding conditions, e.g., pH, P/sub O/sub 2//, grinding media composition and, in particular, size of mill on the wear rates and wear mechanism for both a molybdenite ore and a magnetic iron ore. This allowed data to be obtained on the correlation of scale-up between small diameter laboratory mills ...
The effect of composition on the wear resistance of plastics was studied. Wear was related qualitatively to friction, strength, and ductility. Two types of wear were analyzed: ordinary wear due to repeated surface deformation, and abrasive wear due to mic...
Wear attack is responsible for high production losses and over $40 million per year in equipment repairs and replacement costs at Syncrude`s synthetic crude oil plant near Fort McMurray in Northern Alberta. Most of this damage is caused by the fine quartz particle constituents which predominate in oil sands. It occurs in a multiplicity of forms which can be classified into ...
... COMPARISON OF WARP AND FILLING DIRECTION ABRASION RESULTS ... inserted into a hole drilled into the ... was not possible to drill beyond this ...
A systematic study of abrasive wear resistance of Fe/Cr/Mn based alloys has been carried out using a two body pin-on-disc wear machine. Abrasives used were silicon carbide, alumina and quartz. The objective of this study was to evaluate the abrasive wear ...
... and agencies for Research Development Test and Evaluation ... DRY SLIDING, ABRASION, AND EROSION TESTING WAS PERFORMED. ...
Hard and super-hard materials have very good abrasive wear resistance. However, in many severe wear environments that make use of these materials, impact is a significant component of that environment. Consequently, the behavior of many of these hard materials in impact-wear conditions need to be understood with ...
The presence of hard abrasive particles in the impact zone between parts of machines is the reason for their intensiveabrasive-impact wear. No attempt to analytically account for the features of the interaction of hard abrasive particles with the wear surface during impact has been made, even though such ...
... and wear behavior which was primarily abrasive (Ref 5:38, 45). This ... fer plate and measuring its thickness with a micrometer. The wear of ...
In the progress report for 1977-1979, an extensive literature survey was completed in the areas of abrasive wear mechanisms, wear testing and microstructural effects on abrasive wear. Definitions of the various abrasive wear processes were clarified. A ...
Cemented carbides are used for a wide variety of applications where wear is a problem. Usually the wear of the cemented carbides is a combination of metal-to-metal and abrasion. Wear can occur at room or elevated temperatures. This research summarizes initial research to understand the abrasive ...
Aim of this research program is to establish the effect of mill size and batch or continuous operation on the role of corrosive and abrasive wear during mineral grinding operations. Grinding ball wear tests are being conducted on the laboratory, pilot pla...
The relative contributions of abrasion and corrosion and the effect of scale-up on the wear rates of three different grind materials in molybdenite and taconite ore milling under three mill atmospheres was investigated. A standardized marked ball wear tes...
A simple physically-based model for the abrasive wear of composite materials is presented based on the mechanics and mechanisms associated with sliding wear in soft (ductile) matrix composites containing hard (brittle) reinforcement particles. The model i...
The author proposes a wear model for the abrasive wear of solids. The model scheme is based on the following: microscopic contacts appearing in the course of friction of deforming surfaces exist in coupled states of adhesion and slip which do not prevent ...
... a digestive tract as opposed to occlusal or abrasive wear. None of the wear facets have the ... cusps and blades of this tooth show significant abrasive wear. The empty tooth spaces mesial to the ... ...
NBII National Biological Information Infrastructure
The book deals with theoretical and applied problems of the wear resistance of materials and machine parts. Main attention is devoted to abrasive wear which shortens the service life of agricultural, mining, construction, and other machines and industrial...
The friction and abrasive wear behaviour of an Al-Si1MgMn aluminium alloy reinforced with 10, 15 and 30 vol.% of alumina fibers has been evaluated. The influence of fiber content, matrix hardness, applied load as well as the hardness and size of the abrasive grits was investigated. The tests were performed with a pin-on-drum two-body ...
The in-service operating conditions of coal transport and fragmentation equipment involve various combinations of dry or liquid slurry abrasion, impact loading, and temperatures that may vary from ambient to elevated (500/sup 0/F--1000/sup 0/F). Both 2-body and 3-body abrasive wear can be encountered. The published ...
Abrasive wear is the most common type of wear that causes failure of machine elements. Examinations of abraded surfaces revealed presence of embedded particles and grooves elongated along the sliding direction. This indicates that, there are two sequential stages of an abrasion process. In the first stage, ...
The use of ferrographic analysis in conjunction with light and scanning electron microscopy is described for the elucidation of wear mechanisms taking place in operating equipment. Example of adhesive wear, abrasive wear, corrosive wear, rolling element f...
... Accession Number : ADD138786. Title : Measurement of Erosion- Corrosion Synergism with a Slurry Wear Test Apparatus,. ...
... from federally funded research, testing and training ... Title : Wet Track Abrasion Test for Design of Asphalt ... Abstract : This method of test is intended for ...
The effect of abrasive particle size on the wear behavior of the SiC particle-reinforced aluminium composites produced by liquid metallurgy was investigated under different sizes of SiC grits at a fixed speed. The results show that the wear loss of composite was considerably lower than that of aluminium alloy. The ...
Contamination of the lube-oil with hard abrasive particles leads to a three-body abrasive wear mechanism that highly accelerates piston ring/cylinder liner wear in coal-fueled diesel engines. One approach to reducing that wear is to modify the size and or...
This bibliography contains citations concerning theoretical, experimental, and practical considerations of abrasive wear of various materials, types of surfaces, tools, machinery, equipment, etc. Wear mechanisms, wear resistance, wear rates, and wear protection are ...
The potential of this work is based on consideration of wear volume map for the evaluation of abrasive wear performance of polytetrafluoroethylene (PTFE) and PTFE composites. The fillers used in the composite are 25% bronze, 35% graphite and 17% glass fibre glass (GFR). The influence of filler materials, abrasion ...
Apr 15, 1998 ... Sojourner rover showing Lewis' wheel abrasion experiment. ... These tests created wear conditions more severe than simple rolling. ...
Austempering of ductile irons has led to a new class of irons, Austempered Ductile Irons (ADIs), with improved mechanical strength and fracture toughness lacking in gray cast irons. Laboratory wear tests have been used to evaluate the abrasive and impact-abrasive wear behavior of a suite of ADIs. The use of ...
... from federally funded research, testing and training ... for Research Development Test and Evaluation ... better than proprietary abrasion-resistant alloys ...
... from federally funded research, testing and training ... for Research Development Test and Evaluation ... the combined effects of abrasion and corrosion. ...
... Abrasives can also get into the seal interface, causing 1� rapid wear, short life, and leakage. When abrasive conditions are severe, some secondary ...
... from federally funded research, testing and training ... is caused by abrasion, interfacial adhesion ... w2a.15a, particulates, abrasions, friction, hardness ...
... from federally funded research, testing and training ... agencies for Research Development Test and Evaluation ... two body pin-on-disc abrasion tests. ...
... Developed from federally funded research, testing and training ... a review article on abrasion in multiphase ... of single-point scratch test simulation of ...
Apr 16, 1996 ... NASA Lewis Research Center's Wheel Abrasion Experiment (WAE) will measure the amount of wear on wheel surfaces of the Mars Pathfinder rover. ...
... surface treatment use, the abrasion wear should not be more than 40 percent when tested according to the Los Angeles abrasion test, (ASTM C 131 ...
... from federally funded research, testing and training ... showed some detectable abrasion by five ... WEAR RESISTANCE, TEST AND EVALUATION ...
Abrasion Tester. Background Many years before Apollo astronauts walked on ... Be sure to wear eye protection and gloves. Use a hammer to smash the rocks. ...
Papers presented in the course of this meeting are in the areas of aerospace, engine and drivetrain, fluid film bearings, petroleum and chemicals, seals, solid lubricants, and wear. Attention is given to formulating automatic transmission fluids, the effect of axial vibration on helicopter overrunning clutches, carbon seals in rotary joints, a bidirectional gas thrust bearing, ...
... Very severe applications, such as ore slurries and bottom ash slurries from fossil fuel fired utilities, have been handled by fiberglass pipe which is ...
The considerations involved in the choice of a suitable hose for slurry transportation are described. Hoses have the advantages of flexibility, vibration absorption and abrasion resistance. Brief information on installation is given.
The rheology of coal slurries is investigated and the way in which this will affect the choice of pumps and piping system pressures for these fuels is examined. Materials suitable for resisting corrosion and abrasion are mentioned.
The development of commercially viable diesel engines that operate directly on pulverized coal-fuels will require solution to the problem of severe abrasive wear. The purpose of the work described in this report was to investigate the nature of the abrasive wear problem. Analytical studies were carried out to ...
In a ceria slurry with an ionic surfactant, the grain size and particle size of the poly-crystalline abrasives were controlled independently by changing the calcination temperature and the mechanical milling time, respectively, during abrasive synthesis. A chemical mechanical polishing (CMP) experiment using the ...
High stress abrasive wear behavior of mild steel, medium carbon steel, and hardfacing alloy has been studied to ascertain the extent of improvement in the wear properties after hardfacing of steel. High stress abrasive wear tests were carried out by sliding the specimen against the ...
... SLURRIES, *GRINDING, ABRASIVES, HIGH RATE, SURFACES, AREA COVERAGE, HYDRODYNAMICS, BONDED JOINTS, ANGLE OF ATTACK ...
In this study the wear volume map is obtained and considered for evaluation of the abrasive wear performance for polyamide (PA6) and PA6 composites. Polyamide composites were tailored using 25 wt.% glass bead, 20 wt.% talc and 30 wt.% wollastonite fillers. In this work, the influence of filler materials, abrasion ...
The program discussed in this report involved evaluation of the combustion characteristics of several coal slurry fuels in a single cylinder test engine operating under conditions simulating medium size and speed commercial diesel engines. Baseline performance was established using a reference DF-2 test fuel. Slurry fuels tested included: (1) 45% of a low ...
